Variation in Morphological and Physiological Characteristics of Wild Elymus nutans Ecotypes from Different Altitudes in the Northeastern Tibetan Plateau

Table 3

Total C content, N content, and C : N of seedlings along the elevation gradients.

Altitude (m)	Carbon content (%)		Nitrogen content (%)		C : N	C : N
	Aboveground	Belowground	Aboveground	Belowground	Aboveground	Belowground
2450	^b	^a	^b	^a	^bc	^a
2950	^a	^b	^a	^ab	^bc	^b
3100	^a	^b	^a	^b	^ab	^b
3300	^a	^b	^a	^ab	^a	^b